madson



Aug. 7, 1928. 1,68Ql56 N. MADSON SCRAPER Original Filed Dec. 27, 1926 2Sheets-Sheet l INVENTOR WITNESS:

ATTDR N EY Aug. 7, 1928.

L68J56 N. MADSON SCRAPER Original Filed Dec. 27, 1926 2 Sheets-Sheet 2 FZ WITNESS:

ATTORNEY atented Aug. i, i928.

sires stares tear tints MADSON, or GOEUR DALENE, IDAHO.

sonArnn.

Applicatidnffiled December 27, 1926, Serial No. 157,379. Renewed June 2,1.928.

This invention relates to a scraper or scoop for handling sand,graveh'roclt, coal, etc., the general object'of the invention being toprovide a scraper which is so-formed that when it isp'ulled along asurface by a cable which is attached to a part. of the scraper, it willdig into the surface and.

thus load itself. V

Another object of the invention is to provide the scraper with springdoors, with a lock for holding the doors closed and with a lever which,when moved in acertain direction, will release the locking means topermit the doors to open under the weight of the material therein.

Another object of the invention is to proide a trip on a track which isadapted to he engaged by a car tolwhich the cable of thescraper isattached, which will engage the lever and automatically release thelockingmeans when the scraper reaches a certain point on the track.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like fit) orcorresponding parts throughout the sev- 'eral views, and in which Figure1 is an eievation showing the en tire device in use.

Figure 2 is a top plan view of the scraper.

Figure 3 is a section on line 33 of Figure 2. t

Figure 4 is a fragmentary view of the scraper, showing the doors forclosing the rear part of the same.

Figure 5 is a view of the trip on the traclc Figure 6 is a view of thelocking lever for the doors.

Figure 7 is a section on line 77 of Fig- :ure 4.

under portion or limb and sheet metal 5 is fastened to the upper andlower portions of the frame to form the top and bottom of the scoop andsheet metal 6 is arranged at the sides of the frame for forming thesides of the scoop. The rear of the scoop is left open, butis adapted tobe closed by the doors 7 which are hinged tothe sides of the frame, asshown at 8. and the said doors are kept closed by the springs 9 whichare connected with the tops of the doors and with one of theside piecesof the frame.

-An L-shaped strip 10 is vertically arranged at the rear of the scoopfor covering the adjacent edges of the two doors. The extended ends ofthe lower portions of the frame are shaped to provide the teeth 11 andother teeth 11 are fastened to the bottom of the scoop body, these teethacting to plow up the surface so as to loosen the material and permit itto be drawn into the scoop as the scoop is pulled along. Han dles 12 areconnected with the rear part of the frame for permitting the scoop to bemanipulated by hand as it is being pulled along. A locking bar 13 isslidably mounted at the rear ofthe scoop and this bar is provided withthe pins 14.- which are adapted to engage portions of the two doors tohold the doors in locking position. The doors are provided with notches15 at their abutting edges so that when the locking bar is moved to aposition where the pins will register with the notches,the doors will befree to open. The lower end of the locking bar is formed with a hook 16which will engage a part of the bottom of the scoop which limits thesliding movement of the bar, the said bar being provided with thereduced parts 17 which engage loop portions of brackets 18 on the scoopfor slidably connecting the bar with the scoop.

A lever 19 is pivotally connected with a part ofthe frame of the scoopand is connected by the links 20 with the sliding bar 13. The free endof the lever extends forwardly beyond the upper part of the frame of thescoop and it is offset from the pulley on the frame, as clearly shown inFigure 2. By pushing this lever 19 upwardly or away from the upper endof the frame of the scoop, the bar 13 will be moved to a position whereits pins will come opposite the notches in the doors so that the doorswill be free to open.

I prefer to operate the scoop by the means a cable 24 is attached, whichpasses over the pulley 4 and over a pulley 25 on the front 7 usedforoperatingthe hay fork shown in my Patent No. 1,119,360, datedDecember 1, 1914:, such means comprising a track 21 supported by theuprights 22, the carriage 23 engaging the track and to one end of whichend of the carriage and over a pulley 26 at the forward end of the trackto a power device. As the cable is. pulled upon,,the scoop will bepulled along the ground, as

shown in Figure 1, until it reaches a point under the carriage, when itwill be lifted until its pulley carrying part. will strike the lockingmember 27 which engages a collar 28 on the track so as to release thesaid lock- ,ing member so that a further pull on the in the scoop willcause the doors to open and cable will cause the carriage to move alongthe track carrying the scoop withit.

A trip bar 29 is fastenedto the track at the place Where the scoop is tobe dumped .so that when the lever 19 strikes the broad end 30 of thebar, it will be moved away from the pulley carrying part of the scoop sothat the locking bar will be moved to unlocking position and then theWeight of the material thus permit the material to drop fromthe scoop.The scoop is returned to its loading pos1t1on in any desired manner.'Ihe springs will close the doors after the material has dropped fromthe scoop. If the Weight of the scoop is not sufficient to cause it toload itself as it isbeing pulled along the surface,. suitable Weightscan be attached to the body or this can be done by manipulation of thescoop by means of the handles.

It is thought from the foregoing descrip tion that the advantages andnovel features 7 of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes fall within the scope of the appended claim;

l/Vhat I claim is A scoop of the class described comprising a frame ofsubstantially hook shape with its upper limb extending beyond the lowerlimb, a clevis at the" end of the upper limb, teeth formed at the end ofthe lower limb sheet metal fastened to the upper and lower portions ofthe frame to form the top and bottom of the scoop, sheet metal attachedto the sides of the frame, doors for closing the rear of the scoop,hinges connectingthe doors with side portions of the frame, a verticallymovable locking bar at the rear of the scoop having projections thereonengaging portions of the doors to hold them in

